O2 Index

Nasal Cannulas

The nasal cannula (NC) is a device used to deliver supplemental oxygen to a patient or person in need of extra oxygen. This device consists of a plastic tube which fits behind the ears, and a set of two prongs which are placed in the nostrils. Oxygen flows from these prongs. The nasal cannula is connected to an oxygen tank, a portable oxygen generator, or a wall connection in a hospital via a flowmeter. The nasal cannula carries 1–6 litres of oxygen per minute.

How to Wear a Nasal Cannula Comfortably Step1 Wear a cannula so that it causes a minimum of discomfort. The nasal cannula is a small piece of plastic tubing that is attached to a larger tube which, in turn, connects to the oxygen container. The cannula has two small prongs that are inserted into the nostrils. If the prongs are curved, they should point downward inside the nostrils.

Step2 Lift the tubes on either side of the nose and fit them over the ears. Then move the slider up under the chin to adjust for fit.

Step3 Ease the discomfort to the face and nose by wrapping self-sticking white "hurt-free" fabric first aid tape around the cannula tube on each side, from the prongs all the way to the point where the tube fits over the ears.

Step4 Wrap the fabric tape double thick at the points where the tube is in contact with the face if the tube leaves indentations or marks on the face during sleep. Also, be sure that the tube rests high up on the cheekbones.